# Alchemy (agent skill)

> Alchemy is an agent skill (a SKILL.md file) from BankrBot/skills. Blockchain API access via Alchemy. Use when an agent needs to query blockchain data (balances, token prices, NFT ownership, transfer history, transaction simulation, gas estimates) across Ethereum. It works with Claude Code, Codex and Cursor and has 1,201 GitHub stars.

Blockchain API access via Alchemy. Use when an agent needs to query blockchain data (balances, token prices, NFT ownership, transfer history, transaction simulation, gas estimates) across Ethereum, Base, Arbitrum, BNB, Polygon, Solana, and more. Supports API key access ($ALCHEMYAPIKEY), x402 wallet-based pay-per-request (SIWE/SIWS + USDC), and MPP protocol (SIWE + Tempo/Stripe).

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/BankrBot/skills |
| Skill path | alchemy/SKILL.md |
| Skill name | alchemy |
| GitHub stars | 1,201 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 1 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code, Codex, Cursor |
| Category | Data & analysis |
| Last commit | Oct 5, 2026 |

## When it triggers

- Use when an agent needs to query blockchain data (balances, token prices, NFT ownership, transfer history, transaction simulation, gas estimates) across Ethereum, Base, Arbitrum, BNB, Polygon, Solana, and more.
- Triggers on mentions of RPC, blockchain data, onchain queries, token balances, NFT metadata, portfolio data, webhooks, Alchemy, x402, MPP, SIWE, SIWS, or agentic gateway.

## Add this skill

### Claude Code

```sh
git clone --depth 1 https://github.com/BankrBot/skills.git
cp -r skills/alchemy ~/.claude/skills/alchemy   # personal, or .claude/skills in a project
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/BankrBot/skills.git
cp -r skills/alchemy .agents/skills/alchemy   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/BankrBot/skills.git
cp -r skills/alchemy .cursor/skills/alchemy   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/bankrbot-alchemy
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